Window-fastener



UNITED STATES PATENT OEEIcE.

FRANK J. LOWERY AND FRANK E. BILLIN GS, OF FORT FAIRFIELD, MAINE.

WlNDOW-FASTENER.

SPEGIFIGATIOhT forming part of Letters Patent No. 620,468, datedFebruary 28, 1899.

Application filed December 1 1898. Serial N0. 697,981. (No model.)

To all whom, it may concern:

Be it known that we, FRANK J. LOWERY and FRANK E. BILLINGS, citizens ofthe United States, residing at Fort Fairfield, in the county ofAroostook and State of Maine, have invented certain new and usefulImprovements sashes; and it consists in the provision of a devicewhereby the sash may be automatically raised by operating a push-button,allowing the Window to be raised, means being provided for holding thesash atany height. and looking it in such a position.

More specifically our invention consists in the provision of asashhaving arack-bar upon one of its vertical strips, the teeth of whichrack-bar are designed to mesh with the teeth of a spring-actuatedcog-wheel mounted in the window-casing,and a locking device which holdsthe sash at any desired position and also prevents the rotation of thespring-actuated cog-wheel should the sash be removed for any purpose.

To these ends and to such others as the invention may pertain, the sameconsists, further, in the novel construction, combination, andadaptation of parts, as will be hereinafter more fully described andthen specifically defined in the appended claims.

Our invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecificatiom and in which Figure 1 is an elevation of our invention,parts being broken away to betterillustrate the construction. Fig. 2 isa sectional View showing the construction of the push-button and itsconnections.

Reference now being had to the details of the drawings by letter, Adesignates the window-sash, which has seated in one of its verticalstrips, on its outside adjacent to the window-casing, a rack-bar B. Theteeth of this rack-bar are flush with the edge of the sash,

as shown, and not visible when the sash is in place in thewindow-casing. Seated in a reoess in the casing of the window is ahollow cog-wheel O, in which a coiled spring D is located, one end ofwhich spring is secured to the pivot D, on which the cog-Wheel ismounted, while the other end of the spring is secured to the inside ofthe flange of the wheel, as at d. This cog-wheel O is so located thatits teeth will extend out beyond the facing of the casing and mesh withthe teeth of the rack, whereby as the wheel is rotated in one directionor another the sash will be raised or lowered. Mounted in the inclosedcasing E, containing the cog-wheel, is a slid ing lock-plate F, theouter forkedv end F of which extends through the window-casing adjacentto the rack-bar, and the said forked end is designed to engage with theteeth of the rack-bar and hold the sash at a given height, not allowingthe sash to be'raised or lowered from its locked position until thelocking-slide is withdrawn from the teeth of the rack-bar. v

In order to prevent the unwinding of the cog-wheel in case the sashshould be removed for any purpose, we provide on the sliding lockingmember a projection K, which is designed to engage with the teeth of thecogwheel when the locking member is at its farthest outward throw. Toguide the locking member, which is thrown forward by means of the coiledspring N, in its longitudinal movements, its forked ends extend throughapertures in the window-casing, while a block M, mounted on the broadface of the locking member, bears against the inside face of the coverto the casing inclosing the cog-wheel. This casing may be made of metaland set into the window-casin g similarly as door-locks are insertedinto the door-casing.

' The push-button R (shown in the detail sectional view) has anL-shaped' shoulder with a slanting bracket edge, as seen at R, and thelower end of said push-button extends through an aperture S in the wallof the casing containing the cog-wheel and sliding look, while the otherend of the push-button extends through the opposite wall of the casing.The sliding locking member is apertured, as

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at 0, through which aperture the push button passes, with the slantingedge of the pushrod bearingagain'st one end of the aperture in thelocking member,while the longitudinal straight edge of the push rod orbutton engages the edges of the apertures in the opposite walls of thecasing inclosing the cogwheel, whereby as pressure is applied to theouter end of the push button or rod the slanting edge of the push-buttonwill bear against the end of the aperture in the locking member and drawthe same back under the tension of the spring connected to said memberand the forked end of the locking member will be withdrawn fromengagement with the teeth of the rack-bar and allow the windowsash to beraised or lowered.

In order to allow the window-casing to raise and lower easily,antifriction-rollers may be placed in the window-casing on the oppositeside from that in which the cog-wheel turns.

Having thus described our invention, what we claim to be new, and desireto secure by Letters Patent, is-- 1. In a device for raising and lookinga window-sash, the combination with the sash, the

rack-bar mounted thereon, the cog-wheel having teeth meshing with theteeth of said rack-bar, the spring carried by the cog-wheel, thespring-actuated locking member having a forked end designed to engagewith the teeth of the rack-bar, and a projection designed to engage withthe teeth of the cogwheel, and a push-button for drawing the lockingmember out of engagement with the teeth of the rack-bar and cog-wheel,as set forth.

2. In combination with the sash, the cogwheel, the locking member havinga forked end, the forks of which pass through apertures in thewindow-casing, the block secured to the face of the locking member, andthe push-button, all substantially as shown and described.

In testimony whereof we affix our signatures in presence of twowitnesses.

FRANK J. LOWERY. FRANK E. BILLINGS. Vitnesses:

EMERY E. AUSTIN, W'ILLIAM T. SPEAK.

